Today we bring you a guest post from Ronda Carnegie, Head of Global Partnerships at TED, a nonprofit devoted to Ideas Worth Spreading from three worlds: Technology, Entertainment, Design. Carnegie explains how TED and YouTube are teaming up for the second year to present a challenge called 'Ads Worth Spreading.'

Last year, TED kicked off a challenge to the advertising industry called Ads Worth Spreading, our global search for innovation, ingenuity and intelligence in advertising. The winners can be seen on the front page of Show & Tell, YouTube’s gallery of clever and effective creative marketing.

This year, we are delighted to announce that we’re now accepting entries to TED’s Ads Worth Spreading initiative through a channel on YouTube. The YouTube channel will help promote and showcase submissions, as well as spark conversation. Even if you’re not an advertiser, you can visit the channel and comment on your favorite campaigns. Which ads are thought-provoking, funny, honest, warm, informative or creatively brilliant? We want your feedback, and the channel is our medium for hearing your voice.

One of the most common questions we’re asked about Ads Worth Spreading is: “Why? Why does TED support an initiative around advertising?” TED’s Curator Chris Anderson explains it this way -- “TED’s mission is ‘ideas worth spreading.’ The dream behind this initiative is to find companies that want to communicate ideas to their consumers in the same way that TED wants to communicate with its audience. What makes ideas powerful is that they have a life of their own; an idea can reset someone’s worldview and even begin a domino effect as they pass it on to friends.”

TED will curate a final selection of ten campaigns from 2011. The results will be announced at the TED2012 conference in Long Beach, Calif. in March, and showcased on TED.com and YouTube.

If you’re an agency, brand, producer or individual who’s created an ad worth spreading this year, now is your chance to have your work recognized. Visit the Ads Worth Spreading channel and upload or add your YouTube video to the channel before December 31, 2011.